Formation of packages



March'Z, 1937. A. o. DALLER I 2,072,421

' FORMATION OF'PACKAGES Fil ed March 17, 1935 5 Sheets-Sheet 1 IINVENTOR W a g r ATTORNEY-S March 2, 1937. A. o. DALLER I FORMATION OFPACKAGES Filed March 17, 1933 5 Sheets-Sheet 2 INVENTO ATTORNEYS March2, 1937. Q D'ALLER FORMATION OF PACKACES Filed March 17, 1933 5 Sheets-Sheet 3 INVENTOR 1 ahum/a 9b a j Arromvzvs March 2 1937. A. o.DALLER I FORMATION OF'PACKAGES Filed March 17, 1935 5 Sheets-Sheet 4 AITORNEY-S Patented Mar. 2,1937

UNITED STATES FORMATION OF PACKAGES Adrian 0. Dalicr, Dennisport, Mesa,assignor to- Utility Packages, Inc., a corporation of New YorkApplication March 17, 1983, Serial No. 661,265

23 Claims.

This invention relates to methods and apparatus for the formation ofpackages and to correlated inventions and discoveries whereby andwherewith the same may be enhanced.

In general it is an. object of the invention to provide methods andapparatus whereby various of the steps involved in the formation of alined package may be carried out with effectiveness and eiiiciency.

Another object is the provision of an improved method for forming cartonliners and other types of bags.

Another object is the provision of an improved method for the sealing ofpackages.

Another object is the provision of improved apparatus for the formationof carton liners and other bags.

Another object is the provision of improved apparatus for the sealing ofpackages.

0 A further object is the provision of a method and apparatus for theefiicient and effective sealing of liners and other bags formed of waxedpaper and the like.

Other objects of the invention will in part be obvious and will in partappear hereinafter.

. The invention accordingly comprises the several steps and the relationand order of one or more of such steps with respect to eachof theothers, and the apparatus embodying features of construction,combinations of elements and arrangement of parts which are adapted toeffect such steps, all as exemplified in the following detaileddisclosure, and the scope of the application of which will be indicatedin the-claims.

For a fuller understanding of the nature and objects of the invention,reference should be had to the following detailed description taken inconnection with the accompanying drawings, in whichh Figures 1 and 2are, respectively, side and plan j views of bag-forming apparatusembodying the invention, with certain of the conventional parts omitted,and illustrate one manner in which steps embodying the invention may beperformed; Figs. 3 and 4 are, respectively, side and plan views shown ascontinuations of Figs. 1 and 2., respectively, and illustrate apparatusand a method embodying the invention for closing a lined carton;

Fig. 5 is a detail view illustrating a modified form of plunger and amodified form of sealing means; s

Fig. 6 illustrates another modified form of Such a mechanism;

Fig. 7 is a detail plan view of a modified formof'fiap-bending-and-pointing mechanism;

Figs. 8 and 9 are plan and transverse sectional views, respectively,fllustrating a modified form of mechanism for folding a sealed liner;

Fig. 10 is a plan view of another modified form of mechanism for foldinga liner and closing the end flaps of a carton;

Fig. 11 is a diagrammatic showing of various of the steps involved inthe formation of a package 10 by the use of the apparatus and methodsillustrated in Figs. 1 to 10, inclusive; 1

Fig. 12 is a plan view of a mechanism for closing a side flap carrying atab;

Figs. 13 and 14 are transverse sectional views. 15 respectively, alongthe lines l8-i3 and M-ll in Fig. 12;

Fig. 15 is a side view illustrating apparatus and method for pointingand sealing an unenclosed bag;

Figs. 16 and 1'7 are, respectively plan and side 20 views showing amodified form of mechanism for transferring and conveying packages to beFig. 18; and 0 Fig. 20 is a view similar to the first part of Fig. 3 11showing the steps of constructing a bag by the method and apparatusillustrated in Figs. 18 and 19 In the formation of bags, lined cartons,etc., it is 35 of importance that a high degree of efilciency ofoperation be obtained. It is also of importance in the formation of manytypes of packages that the goods be effectively sealed. One of the mainpurposes of such scaling in many cases is to pre- 40 vent the entranceof moisture to a point within the package where it will affect thegoods. Water-proof sheet material such, for instance, as waxed paper,and paper coated or impregnated with other moisture-proofing materialsis used to 45 a large extent in such packaging operations, particularlyas liners for cartons. For instance, there may be used ordinary papercarrying a mineral wax (e. g., paraffin), ananimal wax (e. g., beeswax),or a vegetable wax (e. g., camauba wax), 5o

moisture-proof cellophane having wax associated therewith, papersvcoated or impregnated with wax-containing nitrocellulose material;resincoated or resin-impregnated paper, and paper impregnated withlatex, etc. The attainment of a 5 sufficiently high degree ofmoisture-proofing in commercial operations effectively to protect thegoods is, however, a matter of considerable dimculty and resort is oftenhad to additional and otherwise unnecessary layers of moisture-proofingmaterial on the outside of the carton. Other purposes of such sealing isto render carton liners or other bags sift-proof, grease proof,stain-proof, etc; since it is of importance in many cases that the goodsbe retained securely in the bag and that the outer surface of thepackage be not discolored or otherwise adversely affected. For instance,a sift-proof bag is of advantage for holding flour and a siftandstain-proof liner containing coffee will prevent the discoloration ofthe carton.

A feature of the present invention resides in the provision of methodsand means whereby effectively sealed carton liners and other bags may bereadily provided, and the invention permits the provision of desirablysealed bags of many types and for a wide variety of uses. An additionalfeature of the invention resides in the provision of particularlyefilcient modes of operation and mechanisms for the formation of bags,lined cartons and other packages; and various other features will beapparent from the following description.

In accordance with the invention one or more stripes of adhesive may beapplied to a web of 80 paper or other material'in such positions thatwhen cut and formed'into bag shape a stripe of dry'adhesive will beprovided at the top of the bag, adhesive being applied at otherpositions desirable for the formation of the bag as de- 85 sired. Afterfilling, the bag is sealed by means of the dry adhesive. In certain ofits aspects the invention contemplates pointing the top of the bag andsealing it by a straight line operation which forms creases only at'theends of the bag.

If the sheet material and adhesive used are of such nature that they donot seal readily, it is of importance that the dried adhesive extendabout all the contacting inner surfaces of the bag, although this is notessential in other cases. As

will be apparent, the adhesive may be applied to sheets after cutting ormay be applied in whole or in part to a web or sheet at a point remotefrom the bag-forming mechanism, as at a paper manufacturing plant, ifdesired, and may in all events be applied in any of a variety ofpositions and the bag formed in any of a variety of ways, two types ofprocedure and certain mechanisms therefor which are particularlydesirable for use being exemplified. As above indicated, the formationof bags from sheets of waxed paper may be readily carried out inaccordance with the invention.

In the formation of packages embodying lined cartons the inventioncontemplates the suitable g spreading of the flaps oi the carton, thepointing of the liner, the pinching of the liner to seal the same, thebending of the pinched portion laterally, and the closing of the flaps.It is to be understood that in the broader aspects of the in- 55 ventionany of a wide variety of sealing means may be utilized and that in theformation of lined cartons in the manner just indicated, a wide varietyof mechanisms and steps may be utilized in efiecting the operation.

7 In Figs. 1 and 2, there is illustrated a form of procedure andapparatus whereby lined cartons may be efliciently and effectivelyformed in accordance with the invention.

In the illustrated construction, the moving 75 parts may be driven fromsuitab e P W? means aerator such as an electric motor, not shown, andsuitably interconnected as by gearing. Various operating parts andinterconnecting mechanisms which may be of types well known in the artare omitted in order to avoid prolixity.

A pair of rolls l0 and II serve to draw a web i2 from a roll i3 over theroller l4 and under glue-applying rolls I5 and I6, whereby a wetadhesive, suitably supplied as from a glue trough fl, is applied to theedges of the web to form stripes i8 and i9. Beyond the rolls i5 and i6and underneath the web, there is provided a suitably-formed member whichmay be a plate 20 heated throughout or at its ends to dry the wetadhesive. Conveyor belts 2! are driven from the roller ii. In order toprevent the web from becoming scorched when its movement is halted forany reason, suitable mechanism is provided to remove the plate upon thehalting of the moving parts including the rolls Ill and ii.

In the present instance, the plate 20 is supported by means of an arm 22pivotally mounted on a shaft 28 and supported by link-work including alink 24, a bell crank 24a mounted on a shaft 24b and a link 240. "Thelink 240 is connected to a sleeve 25 which slides on a shaft 26. Theshaft is normally rotated by means of gearing (not shown) operated froma belt 21 extending over a roll 28 driven, in the present instance, bymeans of the conveyor belt 2|. The sleeve 25 is carried on a sleeve 29which is slidably keyed to the shaft 26 and carries one end of acentrifugal toggle mechanism 30, the other end of which is secured tothe shaft at 3|. Whenever the roll II, and consequently the shaft 26, isoperating the centrifugal toggle mechanism acts to draw the sleeve 28 tothe right causing the link-work to swing into the position shown by fulllines so as to hold the plate 20 in its operative position. The momentthe shaft 26 ceases to rotate, the weight of the plate 20 will act toswing the link-.work to the position shown in dotted lines, and to movethe plate away from the web.

Stripes of wet adhesive are applied transversely to the web by means ofan intermittently operated glue roll 33 supplied with a wet adhesive asfrom a glue trough 34. Desirably the roll 33 is dropped upon the web,lifted momentarily, and dropped again, to provide stripes 35 and 36, andthen is moved upwardly to receive glue before the application of twosimilar stripes. To effect this operation any well known or suitablemechanism including a cam or other means to effect such movement may beutilized. The web is cut into sheets as by means of a rotary cutter 37,which is timed to cut the sheets between each pair of stripes 35 and 36.Each sheet 38 after it is cut is carried by a high speed conveyor 38aover folding rollers 39, under a form which in the present instanceconsists of a plunger (ill operated in synchronism with the otherelements by any well known or suitable mechanism. Stop means title isprovided to assure proper alignment of the sheet. Wires iilb may bestretched above the sheet to hold it against the conveyor,

The plunger serves to press the sheet between the rolls 39 so as to foldthe side portions of the sheets upwardly to provide the sides of thebag. The plunger then carries the folded sheet between additionalfolding members M and 32, which move successively against the plungerand fold inwardly first the unglued cut edges of the sheet and then theglued edges; so that the stripes 35 and 86 overlap the other edgeportion of the sheet.

The tabs are then turned up and these and the I overlapping edgeportions sealed, as by a pair of suitably heated rolls 3 and 44 pastwhich the plunger moves the bag. It is to be noted that 5 the upperportion of the plunger is recessed so a that the stripes of dried glueI8 and I9 do not contact the plunger. Thus danger of the bag sticking tothe plunger or of removing adhesive later neededfor the sealing of thebag is avoided.

10 The plunger is desirably recessed about its entire periphery asshown, but may be recessed merely at the sides along which the rolls 43and 44 move. The plunger projects the bag, as indicated at 45, into acarton 46 on a carton holder 41, and the i5 plunger is thereupon drawnupwardly. Stripper fingers are provided to preventthe withdrawal of thebag with the plunger, and the plunger is,

preferably formed hollow with an opening to the atmosphere to prevent adifferential in air pressure being set up. The stripper fingers compriseizlaig ends of a coil spring 48a wound about a shaft The lined carton istransferred to a continuous conveyor. 49 by suitable mechanism such as apusher bar 50, and rides directly from this-conveyor onto a continuousconveyor 5|. Itis carried by the conveyor 5| under suitable fillingmechanism, such for instance as a weighing machine 52 (Figs. 3 and 4),whereby the bag is filled with suitable ingredients, the unit being heldthereunder by a stop-arm 53 which may be arranged to be automaticallyreleased by the weighing machine. The filled units reach a stop We andare transferred by a pusher rod 59 onto a platform 55 provided withguides 59 and 51, and are moved along the platform by means of arms 58on an endless continuous conveyor 59 at one side of the platform.

In the present exemplification the units are first carried under amechanism for spreading the side flap or fiaps of the cartons. Thismechanism comprises a shaft 90 carrying a wedgeshaped arm 6| whichpasses between the upstanding side portions of the liner and pushes themand likewise the side flaps outwardly, the shaft 60 being timed so thatthe arm GI will I move into each unit. While the side fiaps'are stillpartially spread, they move under longitudinal bars 62 and 63 which haveupturned ends and serve to bring the side flaps to substantially ahorizontal position. If a carton having only a single side flap isutilized, only a single bar needs to be provided. In order to bring theforward flap of the carton to a horizontal position, there are providedhorizontal arms 64 and 64a which are rotated by'vertical shafts 55 and65a. As these arms move together they not only depress the flap, butalso point the forward end of the bag or liner. The flaps of the cartonnow so being out of the way, the top edge portions of the liner may bepressed against each other for sealing. In order that there may be nointerstices for the ingress of moisture, the liner is desirably pinchedfrom end-to end in a manner' 65 which allows for no folds between itsends. Ac-

cordingly the portions of the liner carrying the dry adhesive arepressed firmly and effectively into a tightly sealed relationship. Whenthere is a proper adhesive used, such as one having a rubber base -forinstance, rubber latex compositions, rubber solutions, etc.,this sealingcan be readily eifectuated by cold rolls, since such adhesives readilybind upon pressure without heat, as indicated in my copendingapplication 7 hereinafter referred to. If a rubber latex compositionsuch as set forth in said application is utilized in the coating ofwaxed paper bags, and dried before sealing, it is desirable that theadhesive be carried on each side of the Joint, since when dried theadhesive does not readily unite to a wax surface. To effect thisoperation, the forward end of the liner is pointed forwardly, as bymeans such as the arms 64 ,and 6411, and/or by means such as an arm 96which is preferably formed of soft rubber and which is carried'onproperly timed rotating horizontal shaft 61, or by other suitable means.Preferably, as shown, both the horizontal and vertical arms areutilized, altho either may be used independently. In the presentinstance, as the pointing member 66 slides out of the liner the linermoves between sealing rolls 68 and 69 whereby the side edge portions ofthe liner are pinched tightly together, so that the dry adhesive carriedon its upper edge portions forms a continuous and eifectual seal.Because the adhesive is sealed to itself while dry, there need be noapparatus to supply a sol- .vent or other reactlvating agent. The frontflap and side flaps of the carton pass under the rolls and the rear flapslides under them.

In order to fold down the top of the liner, there may be provided aplate 1|! operated by any suitable cam-controlled or other mechanismwhich imparts thereto a generally four-way motion,-

I first in over the bag, then forwardly with the unit,

then outwardly and then rearwardly. The par-. ticular mechanismexemplified comprises lugs I10 attached to the arms 58 (for the sake ofsimplicity these are shown only on certain of the exemplified arms)which are arranged to cooperate with pins I1I extending downwardly fromthe plate 10 to cause the plate, when it is thrust over the bag, to moveforwardly with it. The plate is mounted on a reciprocating carriage I12by means of a bracket I13 which rides on track rods I14 forming a partof the carriage I12. The carriage I12 rides on lateral track rods I15and is pulled toward stops I16 by means of spring I11. The carriage I13and plate I10 are urged to the left by means of a spring I18; Thecarriage is thrust inwardly so as to carry the plate over each unit bymeans of a rotating cam I19 which is operated from one of the shafts ofcon veyor 59 by means, including a belt I80, which I means causes aproper timing of 'cam I19. In .order to guide the plate 10 forwardly asit is moved inwardly by the cam I19, there-is provided a stationary cammember ii, and in order compress the spring I18. At the end of thisforward movement of the .plate 10 the cam I19 releases the plate so thatthe springs I11 draw the carriage and the plate, guided by the cam I82,toward the cam I 19 and bring the pin "I clear of the lug I10. Thespring I18 then acts to move the plate rearwardly, whereupon theoperation is repeated. By this action, the plate presses the top of thebag flush with the carton and holds 1 it there while the end flaps arefolded in over the projecting ends of the bag. The mechanism forperforming the latter folding actions comprises a longitudinal bar 1Ihaving an upturned 1 end which folds the forward flap over-flush withthe top of the carton proper and an arm 12 carried on a properly timedrotating vertical shaft 13 and acting to fold the rear flap to a forwardposition where it too moves under the bar H. In order to seal thecarton, glue may be applied to the side flaps as by means of glue rolls14 and Ma. One side flap may pass from under the bar 82 and be foldedover by a bent bar 15, whereupon the other flap may be folded over by abent bar 76. The carton may then be run between belts i1 and 18 for asufficient distance to assure that the carton is permanently'closed. Ifa carton having a single side flap is utilized, the closing mechanismmay, of course, be suitably modified.

A variety of types of adhesive materials may be utilized as will bereadily understood, and if desired different adhesives may be applied byrolls iB-it, and 83 respectively. A particularly desirable type ofadhesive for use with waxed paper or the like is disclosed in myco-pending application, Serial No. 649,502, filed December 30, 1932. Ifthis adhesive is so utilized, it is desirable to use both the glue rollsI and I6, since, when dry, the adhesive unites more readily with itselfthan with the waxed paper. When such an adhesive is used it isunnecessary to heat the sealing rolls tit and 89, but these may besuitably heated electrically or otherwise if the conditions of operationrender this desirable.

As above indicated, the exemplified method and apparatus may be modifiedin a variety of ways, a few of which are hereinafter exemplified.

In Fig. 5, there is illustrated a plunger 80 similar to the plunger 40,except that instead of being recessed about its entire periphery at itsupper end, it is only recessed at those sides against which the sealingoperation is to be performed. The recesses are indicated at 8|. There isalso exemplified sealing means which comprise heated plates 82, as wellas heated rollers 83.

In certain instances, the plunger itself may be heated, one form ofheated plunger being exemplified at 84 in Fig. 6. When the plunger isheated, cold rolls 85 maybe utilized. It may be noted in this connectionthat where adhesives, which do not require the use of heat, areutilized, heated members may, of course, be dispensed with.

Several of the many types of mechanisms which may be utilized to performpackage closing steps in accordance with the invention, are exemplifiedin Figs. 7, 8, 9 and 10.

In Fig. 7 there is shown a form of apparatus wherein, instead of using apair of arms, as 64 and Ma, which perform both a flap-bending andliner-pointing function, there is utilized merely a single flap-bendingarm 64b. In such a construction the entire pointing action is performedby the pointing arm 66.

In Figs. 8 and 9, there is shown a modified form of mechanism forbending the portion of the liner which has been sealed between the rolls68 and 69. This comprises a curved plate 86 which bends the sealedportion of the liners over and presses them downwardly fiush with thetop of the carton proper. In order to assure a smooth fold line, thereis preferably provided a horizontal plate 81, under which the forwardflap of the carton may ride. The upstanding portions of the liner arefolded over the right hand edge (Fig. 9) of this plate, whereupon theend flaps may be bent over as by members similar to the members H and12, or other suitable members, and the side flaps suitably closed.

Another form of closing mechanism is illustrated in Fig. 10. Thiscomprises a cam plate 88 rotating on a suitably timed shaft 88 providedwith an upstanding forward flange 80 and a rearward lug 8i. As thepackage and the plate come together, the flange 90 bears against theupstanding sealed portions of the liner and bends them over the outeredge of the plate completing this action. The lug 8| follows the body ofthe plate and serves to bend forwardly the rear flap; and the portion ofthe liner which extends over the forward flap, is bent over by a bar 92similar to the bar H, the body of the plate acting to assist in theformation of a fold line in each instance. It is to be noted that therear flap will still be held bent over in a forward position as itreaches the bar 92. Thereupon the side flap or flaps may be suitablyclosed.

In order to assist in the visualization of the steps hereinbeforedescribed, various stages in the formation of the package areexemplified in Fig. 11. A sheet ready to be formed into a bag is shownat a; at b the sides of the bag are shown bent up; at c the edges of oneside are shown bent inwardly; at d the edges of the other side are soshown; at e the tabs are shown folded up and the overlapping portionssealed; at f the bag is shown inserted in a carton; at g the bag isshown pointed ready for sealing; at h it is shown sealed; at i it isshown with the sealed top of the liner bent over; at {the end flaps ofthe carton are shown closed; at k one side flap is shown closed and at lthe completed package is shown.

In Figs. 12, 13 and 14, there is shown a mechanism for closing a cartonhaving a side flap 7 equipped with an inserting tab. The side fiap,

which is held down by a bar such as 83, reaches a bar 93 which passesunder the flap proper and under a glue roll as which ordinarily is ofsufficient width to glue flaps of varying sizes. In order to keep thetab out of contact with the glue roll, there is provided a bar 95, theend 95a of which is curved so as to bend down the flap out of the way ofa gluing roll 95 whereby glue is applied to the flap. The bar 96terminates beyond the roll, and the flap and tab are received in a plate98 which is curved, so as to bend at the tab inwardly with respect tothe fiap and then to bend the fiap over, so that the tab will beinserted inside the carton at its opposite side, and the side flap laidagainst the end flaps which have previously been bent inwardly.

As will be readily apparent, packages consisting merely of bags, as wellas lined cartons and other types of packages, may be readily formed inaccordance with the invention. In Fig. 15 there is shown a constructionwhereby the pointer B8 and sealing rolls B8 and 69 are utilized forsealing an unenclosed bag 91 coming from a filling unit 98 and propelledby conveying means 59a similar to the member 59.

Instead of utilizing mechanism such as the conveyor iii, the stop 53aand the transfer arm 64, filled cartons or bags may be moved in a directline from the conveyor which runs under the filling mechanism onto aconveyor which carries them under the package-closing mechanism. Onetype of apparatus for this purpose is illustrated in Figs. 16 and 17. Inthis construction lined cartons or bags carried on the conveyor 5| fromthe filling mechanism move against removable stops 99 and I0!) disposedabove the conveyor I III which serves to carry the package underpackage-closing mechanism. The conveyor ifll carries spaced lugs Hi2which move upwardly and forwardly against the end of a -50 not contactthe stripe.

package and push the same forward at a uniform rate. Associated witheach lug is a pair of cams I03 and I04 carried at the sides of theconveyor and adapted to bear against the plates I05 and 8 I08 attachedto the arms 88 and I00, respectively, to spread these arms as each lugrises to engage a package. In order to place the package upon theconveyor. IOI so that a lug I02 will rise behind it, there are provideda pair of high- 10 speed driving rolls I01 and I08.

' As will be understood. a variety of types of packages may be formed inaccordance with the invention in a varietyof diiferent ways.

InFigs. 18, 19 and 20, there is exemplified a ll! method and apparatusfor forming bags by a different type of shaping operation. Lateralstripes of adhesive maybe applied to a web IIO by means of a roll IIIoperating similarly to the roll 33, except that a single stripe insteadof a 20 double stripe is applied. These stripes are shown at Illa inFig. 20. The roll III extends substantially across the entire width ofthe web. The

web is drawn from a roll. II2 under the roll III and over a hotplate II3 by means of rolls H4 and H5. The hot plate H3 is preferably sup-'ported so that it will move away from the web if the motion of the webis stopped for any reason.

A mechanism similar to that shown in connec Ztion with the plate 20 maybe used for this purpose. Adhesive is then applied to one edge of theweb by means-of a roll I I6, similar to the rolls I5, to provide astripe Ba, and lateral stripes of adhesive just forwardly of the stripeslaid down by the roll III are applied by an intermittently operable rollIII similar to the roll III, except that it is recessed throughout aportion of its length, as indicated at IIB, so as to lay down a brokenstripe of adhesive I [la (Fig. 20) The web is carried by a conveyor II8under the rolls H8 and II I and past .a cutter member I20 which cuts the'web into sheets I2I -(Fig. 20) A highspeed conveyor I22 carries eachsheet over folding rolls I23 and in the path of movement of a form. Inthe present instance, this is one of a series of forms I24 carried onanendless conveyor I25. The sheet I2I moves over the rolls I23 with thestripe of dry adhesive III a. at the forward edge of the sheet, and eachform is recessed as indicated at I26 so that the form will Each formcarries a stop plate I28 at its inner end. As each'form moves betweenthe rolls I23, the ends of the sheet are folded upwardly about the form,and as the form moves downwardly these ends are held in folded positionby plates I21, I28, I29 and I30. In order to bend down the unglued upperend of the sheet, there is provided a reciprocating roll I3I carried onarms I32 from a suitably operated shaft I33. The roll I3I moves inwardlybetween the plates I28 and I30 and moves the unglued upper end of thesheet against the top of the form and then moves rapidly away from theform. Slightly below the roll I3I (Fig. 19) there is provided asimilarly operated roll I34 carried on arms I35 from a shaft I36 havinga similar reciprocal action imparted thereto. The roll I34 acts to foldover the glued upper end of the sheet into overlapping relationship withthe unglued upper end of the-sheet, and to seal it thereagainst.Desirably in most instances, the roll I34 will be a heated roll. It isto be noted that the forms I24 are of such size that when the sheet isagainst the stop plate I28, the edge thereof earrying'the broken stripeof adhesive I I'Ia projects beyond the outer end of the form. In orderto fold thisre le inwardy'and to seal the bottom of the bag, there areprovided sIde folding plates I31 and I38 adapted to act successively tofold in the unglued portion of the edge and to fold a portion of theedge which carries adhesive stripe I I'Ia into over- 5 lappingrelationship therewith. The plates I31 and I38 are carried,respectively, on shafts I38 and I40 to which a properly timed reciprocalaction is imparted by any well known or suitable mechanism. Theupstanding tabs on the bottom 10 of thebag are thereupon closed. Toeflect this action there is provided a plate I44 having an upturned end'I4I for bending over the forward tab and an arm I42 carried on arotating shaft I43 for bending forward therearward tab at a 15 time suchthat it also will move under the plate I44. Desirably there is provideda heated plate I45 which may be part, of, or independent of, the plateI44 for the purpose of sealing the tabs and the overlapping portions atthe bottom of the 20 bag. The bag so formed may be removed and insertedinto a carton manually or by suitable mechanism, or a carton may beformed around the bag on the form I24 as it continues in its course in amanner well known in the art, and the lined 25 carton suitably removed.The bags or lined cartons thus formed may be filled and sealed in any ofthe exemplified manners or otherwise, as desired.

It may be noted in this connection that the 30 expression top of the bagas used herein indicates the endof the bag which is open after the bagis formed, regardless of the position of the bag at any particular stagein the operation.

In Fig. 20 m illustrates the sheet I2I ready for 35 folding. The sheetisshown after the action of the rolls I23 at n, of the roll I3I at 0, ofthe roll I34 at p, of the plate I31 at q, of the plate I38 at 1', and ofthe'plate I44 at s. The finished bag. after the final action of the armI42, the plate I44 40 and the plate I45, is shown at t.

Since certain changes in carrying out the above method and in theconstructions set forth, which embody the invention may be made withoutdeparting from 'its scope, it is intended that all 45 matter containedin the above description or shown in the accompanying drawings shall beinterpreted as illustrative and not in a limiting sense.

Having described my'invention, what I claim 50 as new and desire tosecure by Letters Patent, is:

1. The method of forming packages, which comprises providing a stripe ofdry adhesive on one edge of a sheet, adhesive being provided elsewhereon the sheet for use in the formation 5 of a bag from the sheet, formingthe sheet into a bag with said stripe of dry adhesive on the inside ofthe top of the bag, filling the bag, and sealing the top by means ofsaid stripe of dry adhesive without said stripe being reactivated. 60

v 2. The method of forming packages, which comprises providing a stripeof dry adhesive on one edge of a sheet, adhesive being providedelsewhere on the sheet for use in the formation of a bag from the sheet,forming the sheetinto a 65 bag with said stripe of dry adhesive on theinside of the top of the bag, said forming operation being conductedwithout contacting said stripe, filling the bag, and sealing the top bymeans of said stripe of dry adhesive without said stripe 7 beingreactivated.

3. The method of forming packages, which comprises providing a stripe ofadhesive on one surface adjacent one edge of a sheet, adhesive beingprovided elsewhere on the sheet for use in 75 the formation of a bagfrom the sheet, forming the sheet into a bag with said stripe ofadhesive on the inside of the top of the bag, said forming operationbeing conducted without contacting said stripe, filling the bag, andsealing the top by means of said stripe of adhesive and withoutcontacting said stripe with the opposite face of said sheet.

4. The method of forming packages, which comprises providing a stripe ofdry adhesive on at least one side of a web, applying adhesive on saidweb in transverse stripes, transversely cutting the web along lines withadhesive on either side thereof, forming bags by converting each cutsheet into bag shape with the side edges of the web at the top of thebag, sealing the edges adjacent the cuts, filling the bags, and sealingthe top of each bag by means of initially provided adhesive.

5. The method of forming packages, which comprises applying a stripe ofadhesive on each side of a web, drying the adhesive, applying adhesiveon said web in transverse stripes, transversely cutting the web alonglines with adhesive on either side thereof, forming bags by convertingeach cut sheet into bag shape with the stripes of dry adhesive at thetop of the bag and sealing the edges adjacent the cuts, filling thebags, and sealing the top of each bag by pressing together said stripesof dried adhesive.

6. The method of forming packages which comprises applying stripes ofadhesive laterally on a web, drying the adhesive, applying adhesiveelsewhere on the web between spaced stripes, cutting the web --toprovide sheets each having a stripe of dry adhesive adjacent one edge,forming each sheet into a bag with said stripe of dry adhesive adjacentits top, filling the bag, and sealing the top by means of the dryadhesive adjacent its top without said stripe being reactivated.

'l. The method of forming packages, which comprises providing dryadhesive along certain of the edges of a sheet, forming the sheet intobag shape with said dry adhesive on the inside of its top, filling thebag, pointing one end of the bag, and sealing the bag progressively fromsaid end to the other end by means of said dry adhesive.

8. The method of forming a package, which comprises providing stripes ofadhesive adjacent certain of the edges of a sheet of moisture-proofmaterial, forming the sheet into bag shape by an operation involving thesealing of overlapping edges by means of certain of said stripes, othersof said stripes being disposed at the inner edge portions forming thetop of the bag at least along one side and along the adjacent halves ofthe ends of the bag, filling said bag and sealing the bag by a flat sealwherein the ends are pointed and the seal extends without creases fromone end to the other end of the bag.

9. The method of sealing lined cartons which comprises moving linedcartons along a path, laterally spreading the side flap or flaps of thecarton, bending the forward flap forwardly, pointing the forward end ofthe liner, pinching the liner from its forward end rearwardly to sealthe same, bending the pinched portion to one side, bending the forwardflap of the carton rearwardly and the rear flap of the carton forwardly,and sealing the side flaps of the carton.

10. The method of sealing lined cartons which comprises moving linedcartons along a path,

laterally spreading the side flap or flaps of the carton, bending theforward flap forwardly, pointing the forward end of the liner, pinchingthe liner from its forward end rearwardly to seal the same, bending thepinched portion to one side and, while it is held in bent position,bending the forward flap of the carton rearwardly and the rear flap oithe carton forwardly, and sealing the side flaps of the carton.

11. Package sealing apparatus comprising means to press the top edgeportions of a bag together progressively to seal the same, means tocause relative movement of a bag and said sealing means, and means topoint the end of the bag toward said sealing means as it enters thesame.

12. Package sealing apparatus comprising means including a roller forpinching the top of a bag, means to hold an unsealed bag, means to causerelative movement of the aforesaid means to cause a bag to be operatedon by the pinching means, and means to point the end of the bag towardthe pinching means before the pinching means becomes operative.

13. Package sealing apparatus comprising means including a roller forpinching the top of a bag, means to hold an unsealed carton containingan unsealed bag, means to cause relative movement of the aforesaid meansto cause a bag to be operated on by the pinching means, means to movethe forward flap of a carton out of the path of the pinching meansbefore the movement brings the pinching means thereabove, and means topoint the end of the bag toward the pinching means before the pinchingmeans becomes operative.

14. Package forming apparatus including means for moving an open cartoncontaining an open liner along a path, means to spread the side flap orflaps of the carton, means arranged to move inwardly and forwardly onopposite sides of the path for pointing the forward end of the liner andfor moving the forward flap of the carton forwardly, and means toprogressively pinch the liner from its pointed end rearwardly to sealthe same.

15. Package forming apparatus including means for moving an open cartoncontaining an open liner along a path, means to spread the side flap orflaps of the carton, means arranged to move inwardly and forwardly onopposite sides of the path for pointing the forward end of the liner andfor moving the forward flap of the carton forwardly, and means arrangedto move forwardly and upwardly to accentuate the pointing of the liner.

16. Package forming apparatus, comprising means for moving an opencarton containing an open liner along a path, means to spread the flapsof the carton, means to point the forward end of the liner forwardly,means including a pinching roll for receiving the pointed end of theliner and for closing the liner, means to fold over the closed portionof the liner, means to fold the end flaps inwardly and means to closethe carton.

17. Package forming apparatus. comprising means for moving an opencarton containing an open liner along a path, means to spread the flapsof the carton, means including a finger formed of yieldable material androtating on a horizontal axis to point the forward end of the linerforwardly, means including a pinching roll for receiving the pointed endof the liner and for closing the liner, means to fold over the closedportion of the liner, means to fold the end flaps inwardly, and means toclose the carton.

pinching roll for receiving the pointed end of the liner and for closingthe liner, a transverselymoving plate adapted to move the closed portionof the liner laterally, a stationary plate in the path of movement ofthe projecting portions of the unit being moved, means to move rearwardly-projecting portions of the unit forwardly, and means to close thecarton.

19. Package forming apparatus, comprising means for moving an open endcarton containing an open liner along a path, means to spread the flapsof the carton, means to point the forward end of the liner forwardly,means including a pinching roll forreceiving the pointed end of theliner and for closing the liner, a curved plate in the path of movementof the pinched portion of the liner for bending the same downwardly, astationary plate in the path of movement of the projecting portions ofthe unit being moved, means to move rearwardly-proiecting portions ofthe unit-forwardly, and means to close the carton.

20. Package forming apparatus, comprising means for moving an opencarton containing an open liner along a path, means to spread the sideflap or flaps of the carton, longitudinal bar means in the path ofmovement of the carton to further spread the side flap or flaps, meansto move the forward flap forwardly, means to point the forward edge ofthe liner, pinching-roll means adapted to receive the forward flaptherebeneath and to receive the pointed end of the liner and to pinchthe liner, means to move the pinched portion of the liner laterally,means to fold the end flaps inwardly, and means to fold and secure theside flap or flaps.

21. The method of forming packages which comprises providing dryadhesive along certain edges of a sheet, forming the sheet into bagshape with said dry adhesive on the inside of its top, filling the bag,and sealing the bag by means only of said dry adhesive while saidadhesive is dry.

22. The method of forming packages which comprises providing dryadhesive along at least a part of the periphery of a sheet, forming thesheet into bag shape with said dry adhesive on the inside of its top,filling the bag, and sealing the bag by means only of said dry adhesivewhile said adhesive is dry.

23. The method of forming packages which comprises providing a stripe ofdry adhesive on,

open bag by means ofsaid wet adhesive and ADRIAN o. mime.

